Shock absorber



SHOCK ABSORBER Filed July 28, 1950 ATTORNEY Patented Aug. 23, 1932 UNITESTATES.

EDWARD L. o. ALLEN, or OAKLAND,"OALJFQRNIA :3;

The invention is for a shock absorber and 1 has special reference to adevice for minimizing the road shocks normally transmitted through thesprings to the frame of an automotive vehicle, thereby providing for thecomfort of the occupants of the vehicle, pre venting the breaking ofsprings, and practically eliminating rebound.

The main object of the invention is to provide a shock absorber of thehydraulic type which is extremely simple in construction, application,and operatiomvery eificient in its function, and neat in appearance andcoinpact, requiring very little space for installation, and applicableto any make of ,auto

motive vehicle.

The invention consists primarily of a semicylindrical, trough likehousing, pro-vided with a substantially fiat cover, the cover beingprovided with a fluid by-pass from one end to the other. A shaft iscentrally located and rotatable in bearings, and has afiixed thereto avane, freely fitting in the housing, whereby the fluid is forced fromone side to the other about the vane and through the bypass. Adjustmentis provided for the by pass which may be restricted as required for bestresults. A lever is fixed to the end of the shaft, and connects with theaxle of the vehicle by means of a rigid connecting link.

7 The invention is adequately illustrated in the accompanying drawing inwhich:

Fig. 1 is a top plan view of the invention with the cover removed andthe packing gland in section.

Fig. 2 is a longitudinal sectional elevation Y taken through the device,with cover in place. Fig. 3 is a transverse sectional elevation withcover in place.

Similar reference characters are used to designate similar partsthroughout the sev shaft 9, having an interval vane lO, which fitsfreely in the housing 5, and is 'adaptedto swing in both directions asindicated by the arrows and'ldottedlines' of F 2. A boss 11, formed inthe housing5 and "cover 8, pro

opposite end ofthegshaft being provided vides a seal for one'end of theshaft 9, the

with a packing gland 12 to prevent leakage of oil at that end. A lever13 is fixed to the exposed. end of'shaft 9 and is intended to makeconnection with the axle of a vehicle by means of a rigid connectinglink.

The cover 8 is providedwith a by-pass '14 communicating withinterconnecting aper tures 15 and 16, the aperture 16 being re--stricted as required by means of the screw 17, which is threaded intothe end of by-pass 14.

The operation ofthe device is as follows: i

The housing 5 is attached to the frame or body of an automotive vehicleby means of bolts through the apertures 7. A connecting link of rigidmaterial is connected pivotally to the outer end of lever 13, theopposite end of the link being pivotally connected to the axle or otherpart subject directly to the road" shocks. As the vehicle wheel strikesan obstruction, the load is simultaneously transmitted to the spring andto the connecting link, thence to the lever 13, moving the vane 10toward the position shown in dotted lines and forcing the fluid fromside 18 about the vane and through apertures 16, 14 and 15 to side 19the clearing vane permitting a predetermined rate of movement while thebypass may be adjusted to increase this rate of movement. As the wheelleaves the obstruction the opposite movement takes place, the fluid isforced from side 19 about the vane and through passages 15, 14 and 16 toside is checking the rebound.

It will be readily apparent that an extremely simple and effectivedevice is thus provided which reduces or eliminates the shocksordinarily transmitted to the body of 2. vehicle, and preventing thebreaking of springs attributable to this cause.

It will be understood that variations in construction and arrangement ofparts which are consistent with the appended claim may be resortedtowithout detracting. from the spirit or scope of the invention, orsacrificing any of the advantages thereof. I am aware that shockabsorbers of the hydraulic type have been made for auto- 5 motivevehicles, therefore I do not claim such a device broadly, but I doclaim:

In a shock absorber, a semi-cylindrical housing, a cover therefor, a.vane, a shaft integral with said vane, said shaft being intermediatelymounted relative to the connecting plane of said housing and said cover,I and an adjustably; restricted by-pass in said cover, said by-passbeing adjusted by means of a screw, said vane ,clearing the Walls of 1;said housing and forming a passage for fluid therebetween otpredetermined area, Whereby actuation of saidabsorber is vpermittedindependently of-the restricted by-pass, said bypassbeing adapted toprovide for de-V 7330 crease in resistance of said absorber.

V In testimony whereof I affix my signature.

EDWARD L. O. ALLEN.

